I own a 16 chevy 2500hd LML 4x4 and I have recently changed transfer case fluid and front and rear diff. Randomly I get 2 codes, when I'm driving through town(stop and go traffic) P0700-trans control system - circuit malfunction & P2771-4x4 low gear circuit circuit malfunction. What I'm confused about is. This trck has used 4x4 low, probably 2 times its entire life(since i bought it off the dealership lot in 2016) I use 4x4 High everyday to get up my driveway. But always attempt to make sure I'm out 4x4 after i get to the top of my hill.... please help, this is my daily driver. I'm not sure where to begin to look at exposures to wires. Thank you for you're help!
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